水利水电技术2018，Vol.49Issue(2)：49-55,7.DOI:10.13928/j.cnki.wrahe.2018.02.008
基于有限元法和逐步回归法的泵站位移统计模型构建方法
Finite element method and stepwise regression method-based method for constructing displacement statistical model of pumping station
摘要
Abstract
As most of the foundations for pumping station are not consisted of rock,the more accurate statistical model for displacement of pumping station cannot be obtained through conventional mechanical methods,and then the calculation is more difficult.Therefore,a finite element-stepwise regression analysis-based method for constructing displacement statistical model of pumping station is proposed herein in accordance with the construction concept for constructing dam deformation statistical model.Based on the stepwise regression,this method determines all the water pressure-related factors in the statistical model through the finite element method at first,and then determines all the factors in the temperature component and the time-effect component according to the relevant monitoring data,thus obtains more accurate statistical model of pumping structure displacement.Through the verification made on a pumping station of the East Route of the South-to-North Water Diversion Project,it is indicated that the measured horizontal and vertical displacements are basically coincided with the results got from the 3-D finite element-stepwise regression analysis,which is further demonstrated that it is feasible to use the statistical model for the analysis on the displacement of pumping station.The finite element-stepwise regression method-based statistical model for pumping station displacement has better fitting effect and higher fitting precision,and then provides a new idea for the analysis on the monitoring data of pumping station.关键词
统计模型/泵站/位移/有限单元法/逐步回归法Key words
statistical model/pumping station/displacement/finite element method/stepwise regression method分类
建筑与水利引用本文复制引用
朱松松,李同春,冯旭松,宁昕扬,郭瑞..基于有限元法和逐步回归法的泵站位移统计模型构建方法[J].水利水电技术,2018,49(2):49-55,7.基金项目
南水北调大型泵站群运行安全监测及远程协作诊断系统关键技术研究(BE2015734) （BE2015734）
水利部公益性行业科研专项经费项目“土石坝长效安全运行重大关键技术研究”(201501033) （201501033）
